Timothy's Vision Is a Focus of Interest for Many Ophthalmologists

question 15

Multiple Choice

Timothy's vision is a focus of interest for many ophthalmologists.He is able to see well when there is low illumination but not so well when there is a lot of light,for instance,if he is outdoors during the day.He is also unable to detect most colors during the day.Which poorly-functioning structure of the eye is most likely causing Timothy's unusual vision?

• A)rods
• B)cones
• C)optic nerve
• D)sclera

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